“AcroCEF has stopped working” or “RdrCEF has stopped working” errors

Computers with Acrobat or Acrobat Reader installed start having these errors appear on the screen.

Delete or rename the following keys:

HKLM\Software\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AcroCEF.exe
HKLM\Software\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RdrCEF.exe